R - How to determine if every value in column of dataframe is zero?
dataframe, r
Solution
Use `all` builtin: `all(z$C_duration == 0)`
Problem
I have a dataframe and want to determine for a given column if every value in the column is equal to zero. This is the code I have: ``` z <- read.zoo(sub, sep = ",", header = TRUE, index = 1:2, tz = "", format = "%Y-%m-%d %H:%M:%S") if(all.equal(z$C_duration, 0)) C_dur_acf = NA ``` But I am getting an error: ``` Error in if (all.equal(z$C_duration, 0)) { : argument is not interpretable as logical ``` The code should return a boolean value (TRUE/FALSE) if the entire column is all zeros.